Academic Journal

Comparative Analysis of Twenty Intraocular Lens Power Calculation Formulas in Medium-Long Eyes.

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Τίτλος: Comparative Analysis of Twenty Intraocular Lens Power Calculation Formulas in Medium-Long Eyes.
Συγγραφείς: Stopyra, Wiktor1 (AUTHOR) wiktorstopyra@gmail.com, Voytsekhivskyy, Oleksiy2 (AUTHOR), Grzybowski, Andrzej3,4 (AUTHOR)
Πηγή: Diagnostics (2075-4418). Jul2026, Vol. 16 Issue 14, p2281. 13p.
Θεματικοί όροι: *Phacoemulsification, *Sampling errors
Περίληψη: Background/Objectives: The choice of appropriate intraocular lens (IOL) power calculation formulas depends on the axial length of the eye. This study compares the accuracy of twenty formulas in medium-long eyes (24.50–25.99 mm). Methods: Data of patients with medium-long eyes, who underwent uneventful phacoemulsification between January 2018 and September 2023, were retrospectively reviewed. Preoperative IOL power was calculated using the IOLMaster 700 with six formulas: Barrett Universal II, Haigis, Hoffer Q, Holladay 1, Holladay 2, and SRK/T. Three months postoperatively, refraction was measured. Postoperative IOL power calculations were then performed using fourteen additional formulas: Castrop, EVO 2.0, Hoffer QST, K6, Kane, Karmona, Ladas Super Formula AI (LSF AI), Naeser 2, Olsen (OLCR), Olsen (standalone), PEARL-DGS, T2, VRF CMAL, and VRF-G. The main outcome measures included standard deviation (SD) of the prediction error (PE) and the percentage of eyes with PE within ±0.25 D, ±0.50 D, ±0.75 D, and ±1.00 D. Results: Ninety-five eyes with axial lengths ranging from 24.52 mm to 25.97 mm were included. SD values among the twenty formulas ranged from 0.179 (SRK/T) to 0.468 (Olsen OLCR). The percentage of eyes with PE within ±0.50 D ranged from 75.79% (Olsen OLCR) to 98.95% (SRK/T). The SRK/T formula, followed by Holladay 1, demonstrated significantly higher accuracy than most other formulas, while Olsen (OLCR) and Castrop were the least accurate. Conclusions: SRK/T provided the highest accuracy in medium-long eyes, with Holladay 1 performing similarly well. All evaluated formulas achieved PE within ±0.50 D in over 74% of cases. [ABSTRACT FROM AUTHOR]
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  Label: Title
  Group: Ti
  Data: Comparative Analysis of Twenty Intraocular Lens Power Calculation Formulas in Medium-Long Eyes.
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  Data: <searchLink fieldCode="AR" term="%22Stopyra%2C+Wiktor%22">Stopyra, Wiktor</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> wiktorstopyra@gmail.com</i><br /><searchLink fieldCode="AR" term="%22Voytsekhivskyy%2C+Oleksiy%22">Voytsekhivskyy, Oleksiy</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Grzybowski%2C+Andrzej%22">Grzybowski, Andrzej</searchLink><relatesTo>3,4</relatesTo> (AUTHOR)
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  Data: <searchLink fieldCode="JN" term="%22Diagnostics+%282075-4418%29%22">Diagnostics (2075-4418)</searchLink>. Jul2026, Vol. 16 Issue 14, p2281. 13p.
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  Data: *<searchLink fieldCode="DE" term="%22Phacoemulsification%22">Phacoemulsification</searchLink><br />*<searchLink fieldCode="DE" term="%22Sampling+errors%22">Sampling errors</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Background/Objectives: The choice of appropriate intraocular lens (IOL) power calculation formulas depends on the axial length of the eye. This study compares the accuracy of twenty formulas in medium-long eyes (24.50–25.99 mm). Methods: Data of patients with medium-long eyes, who underwent uneventful phacoemulsification between January 2018 and September 2023, were retrospectively reviewed. Preoperative IOL power was calculated using the IOLMaster 700 with six formulas: Barrett Universal II, Haigis, Hoffer Q, Holladay 1, Holladay 2, and SRK/T. Three months postoperatively, refraction was measured. Postoperative IOL power calculations were then performed using fourteen additional formulas: Castrop, EVO 2.0, Hoffer QST, K6, Kane, Karmona, Ladas Super Formula AI (LSF AI), Naeser 2, Olsen (OLCR), Olsen (standalone), PEARL-DGS, T2, VRF CMAL, and VRF-G. The main outcome measures included standard deviation (SD) of the prediction error (PE) and the percentage of eyes with PE within ±0.25 D, ±0.50 D, ±0.75 D, and ±1.00 D. Results: Ninety-five eyes with axial lengths ranging from 24.52 mm to 25.97 mm were included. SD values among the twenty formulas ranged from 0.179 (SRK/T) to 0.468 (Olsen OLCR). The percentage of eyes with PE within ±0.50 D ranged from 75.79% (Olsen OLCR) to 98.95% (SRK/T). The SRK/T formula, followed by Holladay 1, demonstrated significantly higher accuracy than most other formulas, while Olsen (OLCR) and Castrop were the least accurate. Conclusions: SRK/T provided the highest accuracy in medium-long eyes, with Holladay 1 performing similarly well. All evaluated formulas achieved PE within ±0.50 D in over 74% of cases. [ABSTRACT FROM AUTHOR]
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RecordInfo BibRecord:
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    Identifiers:
      – Type: doi
        Value: 10.3390/diagnostics16142281
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 13
        StartPage: 2281
    Subjects:
      – SubjectFull: Phacoemulsification
        Type: general
      – SubjectFull: Sampling errors
        Type: general
    Titles:
      – TitleFull: Comparative Analysis of Twenty Intraocular Lens Power Calculation Formulas in Medium-Long Eyes.
        Type: main
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            NameFull: Stopyra, Wiktor
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            NameFull: Voytsekhivskyy, Oleksiy
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            NameFull: Grzybowski, Andrzej
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            – D: 15
              M: 07
              Text: Jul2026
              Type: published
              Y: 2026
          Identifiers:
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              Value: 20754418
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              Value: 16
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              Value: 14
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            – TitleFull: Diagnostics (2075-4418)
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